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What is a zipper?

What is a zipper? Used 2 pieces zipper side belt connecting and slider make it pull open and closed repeatable and so on accessories. What type of zipper? Open-end zipper,closed-end zipper.movable open-end zipper What is closed-end zipper When the zipper is open,two sides of the tooth chain can not completely separated. What is open-end zipper? […]